Seat mechanism



1. Seat mechanism

The model is a mechanism for a chair or an armchair; 1.1 is a bottom perspective view; 1.2 is a front perspective view; 1.3 is a top perspective view; 1.4 is a right side view; 1.5 is a left side view; 1.6 is a front view; 1.7 is a rear view; 1.8 is a bottom plan view.

In the drawings, the broken lines illustrate portions of the seat mechanism that form no part of the claimed design. 

CLAIM The ornamental design for seat mechanism, as shown and described. 